Choose capacitor types to optimize PC sound quality

摘要

Microsoft's (www.microsoft.com) next-genera-tion client operating system-now officiallyrnknown as Windows Vista-is enhancing desk-rntop- and notebook-PC audio quality and fidel-ity. Hardware manufacturers must meet strict audio-performance requirements to license the Windows Vista logo. Microsoft bases these requirements on audio-performance specifications, such as the THD+N (total harmonic distortion plus noise), dynamic range, and crosstalk. Generally, designers think of audio amplifiers as the limiting factor in performance specifications, such as THD+N. However, passive components in the signal path can introduce THD that contributes significantly to system-level distortion.